A trailing drawdown is the rule that catches good traders off guard: you can be up on the day, up on the account, and still get breached by an ordinary pullback. The floor moved up while you were winning, and your normal give-back reached it.
Understand how the floor tracks your equity and you can trade so it never gets close.
Static vs Trailing Drawdown, Side by Side
A static drawdown sets one fixed floor at the start and never moves it. If your maximum loss line is set at account open, that same line is where it stays for the whole evaluation — as you profit, the distance from your equity to the floor only grows.
A trailing drawdown moves the floor up as your account grows. Every new high drags the floor along behind it, so the buffer you thought you were building by making money doesn’t accumulate the way it does with a static floor.
| Static drawdown | Trailing drawdown | |
|---|---|---|
| Where the floor starts | Fixed at open | Fixed at open |
| Does it move up? | No | Yes, with new highs |
| Cushion grows as you profit? | Yes | Only until the floor stops trailing |
| Main risk | Losing streak | Giving back an unrealized run |
Which type applies, and whether it trails your balance or your equity, changes everything about how you size. Always confirm the exact mechanics with your firm — the reference explainer on trailing drawdown walks through the common variants, but your product’s rulebook is the authority.
How a Trailing Floor Rises With Your Equity
Picture the floor as a magnet dragged a fixed distance below your highest point. When your equity makes a new high, the magnet slides up with it. When your equity falls back, the magnet stays put at the highest level it reached — it does not slide back down.
That asymmetry is the whole trap. The floor ratchets up but never retreats. So an unrealized run that you let round-trip can leave the floor sitting much higher than where you actually banked profit, and now a small further dip breaches an account that’s still nominally green.
Why Banking Profit Can Breach You (Futures Especially)
On many equity-trailing futures evaluations, the floor tracks your peak unrealized equity — the highest your open position ever showed, not what you closed. This is where traders get blindsided: a trade goes deep in your favor, you give some back before exiting, and the floor has already climbed to that peak.
- Let a winner run to a large unrealized profit, then trail out → the floor jumped to the high-water mark.
- Take partial give-back on the next few trades → you’re now pressing against a floor set by profit you never banked.
- One ordinary red trade → breach, while the balance still looks fine.
The defense is to treat unrealized peaks as real for drawdown purposes. Manage exits so you’re not handing back large open profits, because on an equity-trailing account that give-back is permanently baked into where your floor sits.
Sizing So Give-Back Never Reaches the Floor
The core survival move is to keep your per-trade and per-day risk small enough that a normal losing sequence can’t span the distance to the current floor. With a trailing floor, that distance is a moving target, so you recompute it against your live equity — not the number you started with.
- Know your live distance to the floor before every trade, not just at session start.
- Size so several consecutive losses still leave daylight above the floor.
- Widen your margin the closer the floor has trailed to your equity.
Run each setup through a position size calculator and check the resulting loss against your remaining room with a drawdown calculator. If you’ve already taken a hit, a drawdown recovery calculator shows how much you need to earn back — and, more usefully, warns you against over-sizing to get there fast.
When the Trailing Stops and Locks at Start Balance
Many trailing rules stop trailing once your locked-in profit reaches a certain level — often the floor freezes at your starting balance (or a set amount above it) and behaves like a static floor from then on. This is a genuine milestone: past that point, banked profit finally accumulates into real cushion.
Getting the floor to lock is a legitimate first objective for the evaluation. Trade deliberately until the trail freezes, and only then let yourself size up within your fixed-% rule — because now a red streak eats cushion instead of threatening a reset. Confirm the exact lock threshold with your firm; it’s one of the numbers that varies most between products.
Watch Your Live Floor, Not Yesterday’s
The recurring failure is mental: traders anchor to where the floor was at open and never update the picture. On a trailing evaluation the floor is a live number that moved while you slept, and trading against a stale figure is how you breach an account you thought was safe.
This is where continuous tracking beats end-of-day math. Shibiki records every fill through auto-journaling and surfaces your live edge health and current risk envelope as you trade, so the distance to the floor is always the real one. And because the hard limits are enforced at the broker, a self-imposed floor set inside the firm’s trailing line trips first — turning a would-be breach into a routine stop-out. If you’re running the setup across several accounts, copying across prop accounts keeps that same protective margin on every one of them.
Related: Trailing drawdown, explained · Drawdown calculator · Drawdown recovery calculator